Blue MoonThis New Year's Eve

For the first time in twenty years a Blue Moon, or second full moon during the same month, will fall on New Year’s Eve. It will not happen again for almost another twenty years. If you have not already, head outside and have a look.

http://mashable.com/2009/12/31/blue-moon-2009

"According to NASA, the last time a Blue Moon fell on New Year’s Eve was almost 20 years ago, in December 1990. And although a Blue Moon occurs on average every two and a half years, the next time one will fall on New Year’s Eve won’t be until 2028."